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Android 使用 ZipFile 压缩/解压 zip 文件

 1 year ago
source link: http://i.lckiss.com/?p=8242
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背景&需求

一个无层级的极简压缩，主要是用于应用的数据库以及SP导入导出使用，不希望引入三方插件库。

object ZipManager {

    fun zip(files: Array<File>, zipFile: File) {
        ZipOutputStream(zipFile.outputStream()).use { output ->
files.forEach { file ->
file.inputStream().use { input ->
val entry = ZipEntry(file.name)
                    output.putNextEntry(entry)
                    input.copyTo(output)
                }
            }
        }
}

    fun unzip(zipFile: File): String {
        val parentFile = zipFile.parentFile ?: return ""
        val outDir = "${parentFile.absolutePath}/${zipFile.nameWithoutExtension}/"
        File(outDir).apply {
mkdirs()
        }
ZipFile(zipFile).use { zip ->
zip.entries().asSequence().forEach { entry ->
zip.getInputStream(entry).use { input ->
val file = File(outDir + entry.name)
                    file.outputStream().use {
input.copyTo(it)
                    }
                }
            }
        }
return outDir
    }
}

应该比较好理解，用了一些 kotlin 的文件流语法糖，不支持层级是因为没有去支持，自己改改也可以的，就是一个层级嵌套问题，网上的库有点大材小用了，这个小巧好用。


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